JPH06279149A - Production of fire-resisting lagging material - Google Patents
Production of fire-resisting lagging materialInfo
- Publication number
- JPH06279149A JPH06279149A JP4606893A JP4606893A JPH06279149A JP H06279149 A JPH06279149 A JP H06279149A JP 4606893 A JP4606893 A JP 4606893A JP 4606893 A JP4606893 A JP 4606893A JP H06279149 A JPH06279149 A JP H06279149A
- Authority
- JP
- Japan
- Prior art keywords
- fire
- resisting
- lagging material
- mixture
- calcined gypsum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Building Environments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に鉄骨建築における
鉄骨の耐火被覆に好適な、成形された耐火被覆材を製造
する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a molded fireproof coating material suitable for fireproof coating of steel frames, particularly in steel frame construction.
【０００２】[0002]
【従来の技術】鉄骨建築は法定の耐火構造とするために
その躯体の鉄骨の表面を耐火性の断熱材で被覆すること
が必要である。このために用いられる耐火性断熱材とし
ては、鉄骨表面に吹き付けて耐火性被覆層を形成させる
もの、耐熱性無機繊維のフェルト等を用いて作られた可
撓性シート状物、および板状その他鉄骨被覆に適した形
状に成形されたものなどがあり、それぞれ適所に使い分
けられている。このうち、鉄骨形状に合わせてあらかじ
め成形された耐火被覆材は、施工する際に粉塵や繊維の
飛散がほとんどなく作業環境を良好に保つことができ、
また施工能率も良いなどの特長がある。2. Description of the Related Art In steel frame construction, it is necessary to cover the surface of the steel frame of the frame with a fireproof heat insulating material in order to have a legal fireproof structure. As the fire-resistant heat insulating material used for this purpose, one that is sprayed on the surface of the steel frame to form a fire-resistant coating layer, a flexible sheet-like object made using felt of heat-resistant inorganic fiber, or a plate-like material Some of them are molded into a shape suitable for steel frame coating, and they are used properly in their respective places. Of these, the fire-resistant coating material preformed in conformity with the steel frame shape can maintain a good working environment with almost no dust or fiber scattering during construction,
It also has the advantage of good construction efficiency.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、上記
成形された耐火被覆材であって軽量かつ高性能のものを
能率よく安価に製造する方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for efficiently and inexpensively manufacturing the above-mentioned molded fireproof coating material which is lightweight and has high performance.
【０００４】[0004]
【課題を解決するための手段】本発明により提供された
耐火被覆材の製造法は、粉末状水酸化アルミニウム、耐
火性無機繊維および焼石膏の混合物を起泡剤含有水と共
に混合して多量の気泡を含有するスラリー状混合物を調
製し、これを鋳込み成形して硬化させることを特徴とす
る。以下、上記製造法について詳述する。The method for producing a fireproof coating provided by the present invention comprises the steps of mixing a mixture of powdered aluminum hydroxide, refractory inorganic fibers and calcined gypsum with a water containing a foaming agent. The present invention is characterized in that a slurry-like mixture containing bubbles is prepared, and the mixture is cast and molded and cured. Hereinafter, the manufacturing method will be described in detail.
【０００５】まず主要原料について述べると、水酸化ア
ルミニウムの粉末は耐火被覆材製造過程では単なる細骨
材となるが、製品が鉄骨表面を被覆した状態において火
災に遭遇した場合、吸熱反応である脱水反応を起こし、
それにより鉄骨の温度上昇を遅らせる作用をするもので
ある。First, the main raw materials will be described. Aluminum hydroxide powder simply becomes fine aggregate in the process of manufacturing a fireproof coating material, but when a product encounters a fire with the steel frame surface coated, dehydration is an endothermic reaction. Cause a reaction,
As a result, it acts to delay the temperature rise of the steel frame.
【０００６】耐火性無機繊維は補強材として使われる
が、短いものは骨材ともなる。使用可能な無機繊維の具
体例としては、繊維長が２〜４０mm程度の各種セラミッ
ク繊維、炭素繊維、ロックウール等がある。これらの無
機繊維は、２種以上を併用することができる。また、こ
れらの繊維を製造する過程で発生するいわゆるショット
綿など、通常は廃棄もしくは再生されるような不良品
も、本発明の製造法においては原料繊維として使用する
ことができる。The refractory inorganic fiber is used as a reinforcing material, but a short one also serves as an aggregate. Specific examples of usable inorganic fibers include various ceramic fibers having a fiber length of about 2 to 40 mm, carbon fibers, rock wool and the like. Two or more kinds of these inorganic fibers can be used in combination. In addition, defective products that are normally discarded or recycled, such as so-called shot cotton generated in the process of manufacturing these fibers, can also be used as the raw material fibers in the manufacturing method of the present invention.
【０００７】焼石膏は、本発明の製造法において用いら
れる唯一の結合剤であって、混和水により速やかに水和
して硬化し、上記骨材および補強材の混合物に一定の成
形形状を与える。Calcined gypsum is the only binder used in the manufacturing method of the present invention, which is rapidly hydrated and hardened by mixing water to give a certain molding shape to the mixture of the aggregate and the reinforcing material. .
【０００８】上記の主原料は、望ましくは水酸化アルミ
ニウム１０〜４０重量％、焼石膏５０〜７５重量％、ロ
ックウールまたは（および）セラミックファイバー５〜
２５重量％、炭素繊維０.５〜２重量％の比率で使用す
る。これらは、あらかじめ均一に混合してから水を加え
て混合するが、一部の原料は、他の原料が水と混合され
た後で添加、混合してもよい。成形原料混練用の水の適
量は、上記固形成形原料に対して重量比で約０.７〜１.
６倍量である。この水には、起泡剤たとえば起泡性非イ
オン界面活性剤を溶かしておき、混練中に多量の気泡が
導入されるようにする。The above main raw materials are preferably 10 to 40% by weight of aluminum hydroxide, 50 to 75% by weight of gypsum, 5 to 5% of rock wool or / and ceramic fibers.
It is used in a ratio of 25% by weight and 0.5 to 2% by weight of carbon fiber. These are mixed uniformly before being mixed with water, but some raw materials may be added and mixed after other raw materials are mixed with water. A suitable amount of water for kneading the forming raw material is about 0.7 to 1.
6 times the amount. A foaming agent such as a foaming nonionic surfactant is dissolved in this water so that a large amount of bubbles are introduced during kneading.
【０００９】このほかに、凝結速度調整のためのクエン
酸ナトリウム、気泡安定化のための粘度調整剤（たとえ
ばポリエチレンオキサイド）、硬化前の成形体の強度を
高め取扱いを容易にする増強剤・減水剤（たとえば水溶
性メラミンスルホン酸ナトリウム樹脂）、鋳込み後の凝
結促進に有効な硫酸カリウム、３号けい酸ソーダ等、任
意の成形助剤を、混練用の水に溶かして、あるいは粉末
のまま、添加してもよい。けい酸ソーダを添加した場合
は、凝結促進だけでなく、製品を鉄骨に密着させて使用
したとき鉄骨の防錆効果も得られる。さらに、鉄骨のた
めの防錆剤を混入しておくこともできる。In addition to the above, sodium citrate for adjusting the setting speed, a viscosity adjusting agent (for example, polyethylene oxide) for stabilizing bubbles, a strengthening agent for reducing the strength of the molded product before curing and facilitating the handling, and water reduction. An agent (for example, a water-soluble sodium melamine sulfonate resin), potassium sulfate effective for accelerating the setting after casting, an optional molding aid such as sodium silicate No. 3 or the like, dissolved in water for kneading or as a powder, You may add. When sodium silicate is added, not only acceleration of setting but also rust prevention effect of the steel frame can be obtained when the product is used in close contact with the steel frame. Furthermore, a rust preventive agent for steel frames can be mixed.
【００１０】ミキサーによる全成形原料の撹拌は、細か
い気泡が混合物中に導入されるような条件で行う。この
ときの気泡導入量によって製品の嵩密度が決まるから、
最終的に嵩密度が約０.２〜０.６g/cm3の製品が得られ
るように、気泡導入量に注意する。適当量の気泡を含有
する均一なスラリー状混合物が得られたならば、それを
鉄骨用耐火被覆材として必要な形状に鋳込み成形する。
この後、焼石膏が凝結し更に脱型可能な程度に硬化した
ならば、成形体を型から取り出し、望ましくは約４５〜
６０℃に加熱して硬化を完結させると共に乾燥する。The stirring of all the forming raw materials by the mixer is carried out under the condition that fine air bubbles are introduced into the mixture. Since the bulk density of the product is determined by the amount of bubbles introduced at this time,
Care is taken in the amount of air bubbles introduced so that a product having a bulk density of about 0.2 to 0.6 g / cm 3 is finally obtained. Once a homogeneous slurry mixture containing an appropriate amount of bubbles is obtained, it is cast into the shape required for a fire resistant coating for steel frames.
After this, when the calcined gypsum is hardened and hardened to such a degree that it can be demolded, the molded body is taken out of the mold, and preferably about 45 to
Heat to 60 ° C. to complete cure and dry.
【００１１】本発明による耐火被覆材は、特に鉄骨建築
における鉄骨の耐火被覆に好適なものであるが、用途は
それに限定されるものではなく、ほかにも、その優れた
耐熱性と軽量性を生かして各種工業用炉構築材料に、耐
火レンガと同様に使用することができる。The fire-resistant coating material according to the present invention is particularly suitable for the fire-resistant coating of steel frames in steel-framed constructions, but its use is not limited thereto, and besides, its excellent heat resistance and light weight are required. It can be effectively used for various industrial furnace building materials in the same manner as refractory bricks.
【００１２】[0012]
【実施例】ミキサーで焼石膏６０重量部、水酸化アルミ
ニウム２０重量部およびポリエチレンオキサイド（分子
量２００万〜５００万）０.０５重量部を混合した後、
水１００重量部（非イオン界面活性剤０.２重量部およ
び水溶性メラミン樹脂０.３重量部を含む）を加え、さ
らにロックウールショット綿１９重量部および炭素繊維
１重量部を加えて撹拌を続けた。[Example] After mixing 60 parts by weight of calcined gypsum, 20 parts by weight of aluminum hydroxide and 0.05 part by weight of polyethylene oxide (molecular weight of 2,000,000 to 5,000,000) with a mixer,
Add 100 parts by weight of water (including 0.2 parts by weight of nonionic surfactant and 0.3 parts by weight of water-soluble melamine resin), and further add 19 parts by weight of rock wool shot cotton and 1 part by weight of carbon fiber and stir. Continued.
【００１３】細かい気泡を含有する均一なスラリー状混
合物が得られたところで、それを成形用型に流し込ん
だ。３０分で脱型可能な状態になったので型から取り出
し、その後さらに６０℃で２４時間、乾燥を行なった。
得られた製品の特性値は下記のとおりであった。When a uniform slurry-like mixture containing fine bubbles was obtained, it was poured into a molding die. The mold was ready for demolding in 30 minutes, and then taken out of the mold, and then dried at 60 ° C. for 24 hours.
The characteristic values of the obtained product were as follows.
【００１４】 嵩密度 ０.４１g/cm3 常態曲げ強さ １２kgf/cm2 1000℃・3時間加熱後曲げ強さ ３kgf/cm2 1000℃・3時間加熱による収縮率 １.５％ 水中３０日間浸漬後曲げ強さ ８kgf/cm2 Bulk density 0.41 g / cm 3 Normal bending strength 12 kgf / cm 2 Bending strength after heating at 1000 ° C. for 3 hours 3 kgf / cm 2 Shrinkage rate by heating at 1000 ° C. for 3 hours 1.5% Soaking in water for 30 days Post-bending strength 8kgf / cm 2
【００１５】[0015]
【発明の効果】上述のように、硬化の速い焼石膏を結合
剤として用い無機繊維製造工程から発生する廃棄物の大
量利用も可能な本発明によれば、軽量で耐火性能にも優
れた耐火被覆材をきわめて能率的に、かつ安価に製造す
ることができる。Industrial Applicability As described above, according to the present invention, which uses a quick-setting calcined gypsum as a binder and can use a large amount of waste generated from the inorganic fiber manufacturing process, the present invention is lightweight and excellent in fire resistance. The covering material can be manufactured very efficiently and inexpensively.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 福田 力夫 長野県上水内郡牟礼村大字牟礼708−４ (72)発明者 館林 清夫 長野県長野市松代町東寺尾3893 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Rikio Fukuda 708-4 Mure, Mure Village, Kamimizunai District, Nagano Prefecture (72) Inventor Kiyoo Tatebayashi 3893 Higashiterao, Matsushiro Town, Nagano City, Nagano Prefecture
Claims (1)
繊維および焼石膏の混合物を起泡剤含有水と共に混合し
て気泡を含有するスラリー状混合物を調製し、これを鋳
込み成形して硬化させることを特徴とする耐火被覆材の
製造法。1. A mixture of powdered aluminum hydroxide, refractory inorganic fiber and calcined gypsum is mixed with water containing a foaming agent to prepare a slurry mixture containing bubbles, which is cast and cured. A method for manufacturing a fireproof coating material characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5046068A JP2660378B2 (en) | 1993-02-12 | 1993-02-12 | Manufacturing method of fireproof coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5046068A JP2660378B2 (en) | 1993-02-12 | 1993-02-12 | Manufacturing method of fireproof coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06279149A true JPH06279149A (en) | 1994-10-04 |
| JP2660378B2 JP2660378B2 (en) | 1997-10-08 |
Family
ID=12736690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5046068A Expired - Lifetime JP2660378B2 (en) | 1993-02-12 | 1993-02-12 | Manufacturing method of fireproof coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2660378B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050069234A (en) * | 2003-12-31 | 2005-07-05 | 주식회사 케이씨씨 | Sprayable fireproof coating material with gypsum |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4937930A (en) * | 1972-08-12 | 1974-04-09 | ||
| JPS5325626A (en) * | 1976-08-23 | 1978-03-09 | Nisshin Eng | Noncombustible foam body utilizing industrial waste materials |
| JPS55154370A (en) * | 1979-05-16 | 1980-12-01 | Nitta Belt Kk | Nonflammable lightweight composite material having emboss and its manufacture |
| JPS61222972A (en) * | 1985-03-27 | 1986-10-03 | 株式会社クラレ | Vibration-controlling and sound-insulating porous sheet-like matter |
| JPH02137781A (en) * | 1988-11-17 | 1990-05-28 | Chiyoda Kenzai Kogyo Kk | Light-weight gypsum board |
| JPH04164871A (en) * | 1990-10-30 | 1992-06-10 | Mitsubishi Materials Corp | Lightweight gypsum cured form |
-
1993
- 1993-02-12 JP JP5046068A patent/JP2660378B2/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4937930A (en) * | 1972-08-12 | 1974-04-09 | ||
| JPS5325626A (en) * | 1976-08-23 | 1978-03-09 | Nisshin Eng | Noncombustible foam body utilizing industrial waste materials |
| JPS55154370A (en) * | 1979-05-16 | 1980-12-01 | Nitta Belt Kk | Nonflammable lightweight composite material having emboss and its manufacture |
| JPS61222972A (en) * | 1985-03-27 | 1986-10-03 | 株式会社クラレ | Vibration-controlling and sound-insulating porous sheet-like matter |
| JPH02137781A (en) * | 1988-11-17 | 1990-05-28 | Chiyoda Kenzai Kogyo Kk | Light-weight gypsum board |
| JPH04164871A (en) * | 1990-10-30 | 1992-06-10 | Mitsubishi Materials Corp | Lightweight gypsum cured form |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050069234A (en) * | 2003-12-31 | 2005-07-05 | 주식회사 케이씨씨 | Sprayable fireproof coating material with gypsum |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2660378B2 (en) | 1997-10-08 |
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